Electronic Telegram No. 959
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SATELLITES OF URANUS
     A. A. Christou, Armagh Observatory, reports that his CCD photometry
of the Uranian satellite system, obtained by M. Hidas and T. Brown (Las
Cumbres Observatory Global Telescope, University of California, Santa
Barbara) using the 2-m Faulkes Telescope South and SDSS I filter,
reveals a mutual event between satellites Uranus IV (Oberon) and Uranus
II (Umbriel) on May 4.  Preliminary estimates yield a mid-time of May
4.79840 UT and a flux drop of 0.35.  Observations are encouraged during
the remainder of the current Uranian mutual event season; predictions
are given by Christou (2005, Icarus 178, 171) and Arlot et al. (2006,
A.Ap. 456, 1173).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2007 CBAT
2007 May 11                      (CBET 959)               Daniel W. E. Green